ASTROSAT CZTI

Data Quality Report

Orbit 00441

Creation date: 2024-06-27T13:59:34.536082
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1P01_044T01_9000000072_00441cztM0_level2.evt modeM0/AS1P01_044T01_9000000072_00441cztM0_level2_quad_clean.evt
Size (bytes)756,933,12045,959,040
Size721.9 MB 43.8 MB
Events in quadrant A5,943,162262,181
Events in quadrant B5,845,513263,490
Events in quadrant C5,461,048257,965
Events in quadrant D5,338,122254,001

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02128446
B02097334
C01984112
D01949917

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5033110.218558%
B503510.019861%
C504210.019833%
D5039340.674737%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7201 5042 138 138 1.92% 2.74%
B 7201 5043 62 62 0.86% 1.23%
C 7201 5046 40 40 0.56% 0.79%
D 7201 5046 115 115 1.60% 2.28%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 69 88326 265.77 1474 1459 326.9
A 0 238 84608 254.39 1474 1459 326.9
A 8 192 47671 141.38 1474 1459 326.9
B 11 51 27044 72.72 1504 1511 351.1
B 0 220 18425 48.17 1504 1511 351.1
B 0 23 12286 30.69 1504 1511 351.1
C 10 38 30207 74.62 1379 1431 385.6
C 9 206 4969 9.17 1379 1431 385.6
C 9 241 4967 9.17 1379 1431 385.6
D 3 13 119011 304.53 1305 1345 386.4
D 4 114 59560 150.67 1305 1345 386.4
D 13 117 51352 129.42 1305 1345 386.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter